re PR target/80090 (Incorrect assembler - output_addr_const may generate visibility...

[gcc.git] / libsanitizer / configure.ac

diff --git a/libsanitizer/configure.ac b/libsanitizer/configure.ac
index ab4b216a35124a265b85fd2a1c38f72656a094f6..b0c485b0f7bcf98dcffa98a98ec5eeee884f3e26 100644 (file)
--- a/libsanitizer/configure.ac
+++ b/libsanitizer/configure.ac
@@ -5,6 +5,8 @@ AC_PREREQ([2.64])
 AC_INIT(package-unused, version-unused, libsanitizer)
 AC_CONFIG_SRCDIR([include/sanitizer/common_interface_defs.h])
 
+AM_ENABLE_MULTILIB(, ..)
+
 AC_MSG_CHECKING([for --enable-version-specific-runtime-libs])
 AC_ARG_ENABLE(version-specific-runtime-libs,
 [  --enable-version-specific-runtime-libs    Specify that runtime libraries should be installed in a compiler-specific directory ],
@@ -26,7 +28,6 @@ AC_SUBST(target_alias)
 GCC_LIBSTDCXX_RAW_CXX_FLAGS
 
 AM_INIT_AUTOMAKE(foreign no-dist)
-AM_ENABLE_MULTILIB(, ..)
 AM_MAINTAINER_MODE
 
 # Calculate toolexeclibdir
@@ -95,7 +96,17 @@ AM_CONDITIONAL(LSAN_SUPPORTED, [test "x$LSAN_SUPPORTED" = "xyes"])
 AC_CHECK_FUNCS(clock_getres clock_gettime clock_settime)
 
 # Common libraries that we need to link against for all sanitizer libs.
-link_sanitizer_common='-lpthread -ldl -lm'
+link_sanitizer_common='-lpthread -lm'
+
+# At least for glibc, shm_open is in librt.  But don't pull that
+# in if it still doesn't give us the function we want.  This
+# test is copied from libgomp.
+AC_CHECK_LIB(rt, shm_open,
+  [link_sanitizer_common="-lrt $link_sanitizer_common"])
+
+# Do a configure time check for -ldl
+AC_CHECK_LIB(dl, dlsym,
+  [link_sanitizer_common="-ldl $link_sanitizer_common"])
 
 # Set up the set of additional libraries that we need to link against for libasan.
 link_libasan=$link_sanitizer_common
@@ -113,16 +124,15 @@ AC_SUBST(link_libubsan)
 link_liblsan=$link_sanitizer_common
 AC_SUBST(link_liblsan)
 
+
 # At least for glibc, clock_gettime is in librt.  But don't pull that
 # in if it still doesn't give us the function we want.  This
 # test is copied from libgomp.
-if test $ac_cv_func_clock_gettime = no; then
-  AC_CHECK_LIB(rt, clock_gettime,
-    [link_libasan="-lrt $link_libasan"
+AC_CHECK_LIB(rt, clock_gettime,
+  [link_libasan="-lrt $link_libasan"
 link_libtsan="-lrt $link_libtsan"
 # Other sanitizers do not override clock_* API
 ])
-fi
 
 case "$host" in
   *-*-darwin*) MAC_INTERPOSE=true ; enable_static=no ;;
@@ -132,6 +142,24 @@ AM_CONDITIONAL(USING_MAC_INTERPOSE, $MAC_INTERPOSE)
 
 backtrace_supported=yes
 
+AC_MSG_CHECKING([for necessary platform features])
+case "$target" in
+  *-*-linux*)
+    # Some old Linux distributions miss required syscalls.
+    sanitizer_supported=no
+    AC_TRY_COMPILE([#include <sys/syscall.h>],[
+      syscall (__NR_gettid);
+      syscall (__NR_futex);
+      syscall (__NR_exit_group);
+    ], [sanitizer_supported=yes])
+    ;;
+  *)
+    sanitizer_supported=yes
+    ;;
+esac
+AC_MSG_RESULT($sanitizer_supported)
+AM_CONDITIONAL(SANITIZER_SUPPORTED, test "$sanitizer_supported" = yes)
+
 # Test for __sync support.
 AC_CACHE_CHECK([__sync extensions],
 [libsanitizer_cv_sys_sync],
@@ -208,7 +236,7 @@ AC_SUBST(BACKTRACE_SUPPORTED)
 
 GCC_HEADER_STDINT(gstdint.h)
 
-AC_CHECK_HEADERS(sys/mman.h)
+AC_CHECK_HEADERS(sys/mman.h alloca.h)
 if test "$ac_cv_header_sys_mman_h" = "no"; then
   have_mmap=no
 else
@@ -293,6 +321,24 @@ if test "$have_getexecname" = "yes"; then
   AC_DEFINE(HAVE_GETEXECNAME, 1, [Define if getexecname is available.])
 fi
 
+# Check for rpc/xdr.h
+AC_CHECK_HEADERS(rpc/xdr.h)
+if test x"$ac_cv_header_rpc_xdr_h" = xyes; then
+  rpc_defs="$rpc_defs -DHAVE_RPC_XDR_H=1"
+else
+  rpc_defs="$rpc_defs -DHAVE_RPC_XDR_H=0"
+fi
+
+# Check for tirpc/rpc/xdr.h
+AC_CHECK_HEADERS(tirpc/rpc/xdr.h)
+if test x"$ac_cv_header_tirpc_rpc_xdr_h" = xyes; then
+  rpc_defs="$rpc_defs -DHAVE_TIRPC_RPC_XDR_H=1"
+else
+  rpc_defs="$rpc_defs -DHAVE_TIRPC_RPC_XDR_H=0"
+fi
+
+AC_SUBST([RPC_DEFS], [$rpc_defs])
+
 AM_CONDITIONAL(LIBBACKTRACE_SUPPORTED,
               [test "x${BACKTRACE_SUPPORTED}x${BACKTRACE_USES_MALLOC}" = "x1x0"])
 
@@ -328,4 +374,10 @@ _EOF
 ])
 fi
 
+AC_SUBST([TSAN_TARGET_DEPENDENT_OBJECTS])
+AC_SUBST([SANITIZER_COMMON_TARGET_DEPENDENT_OBJECTS])
+
+# Determine what GCC version number to use in filesystem paths.
+GCC_BASE_VER
+
 AC_OUTPUT